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36 lines
817 B
36 lines
817 B
6 years ago
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package bcrypt
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import "encoding/base64"
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const alphabet = "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
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var bcEncoding = base64.NewEncoding(alphabet)
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func base64Encode(src []byte) []byte {
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n := bcEncoding.EncodedLen(len(src))
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dst := make([]byte, n)
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bcEncoding.Encode(dst, src)
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for dst[n-1] == '=' {
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n--
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}
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return dst[:n]
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}
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func base64Decode(src []byte) ([]byte, error) {
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numOfEquals := 4 - (len(src) % 4)
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for i := 0; i < numOfEquals; i++ {
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src = append(src, '=')
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}
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dst := make([]byte, bcEncoding.DecodedLen(len(src)))
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n, err := bcEncoding.Decode(dst, src)
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if err != nil {
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return nil, err
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}
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return dst[:n], nil
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}
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